RESUMEN
Cancer is a major public health concern, impacting nearly 20 million people each year, and it is responsible for 1 in 6 deaths worldwide. The burden of cancer is increasing rapidly, straining health systems that are unable to prevent and manage the disease. Childhood cancer constitutes a significant and relevant public health challenge; it was the ninth leading cause of childhood disease globally, according to findings by the Global Burden of Disease 2017 study. Almost 80% of all children diagnosed with cancer live in low- and middle-income countries where treatment is often unavailable or unaffordable. As a result, only about 15-45% of these children survive compared with more than 80% in high-income countries. This represents a great health inequity. Delivering on the mandate provided by World Health Assembly resolution 70.12, WHO together with St. Jude Children's Research Hospital and other global partners launched the Global Initiative for Childhood Cancer at the United Nations General Assembly during the third High-level Meeting on the prevention and control of noncommunicable diseases in September 2018. The Initiative aims to increase global survival for children with cancer to at least 60% by 2030, while reducing suffering for all children with cancer. Five years after launching the Initiative, more than 70 countries across the World Health Organization's 6 regions have advanced to different phases of action through implementation of the Initiative's CureAll framework for action. Many successful approaches to implementing the CureAll pillars and enablers have demonstrated that improving care for children with cancer in low- and middle-income countries is possible as long as there is strong political will, multisectoral commitments and strategic investment.
El cáncer es un importante problema de salud pública: afecta a cerca de 20 millones de personas cada año y es responsable de 1 de cada 6 muertes a nivel mundial. La carga del cáncer está aumentando rápidamente, lo que somete a una gran presión a los sistemas de salud que no pueden prevenir y manejar la enfermedad. El cáncer infantil constituye un importante problema de salud pública y tiene gran relevancia: fue la novena causa de enfermedad infantil a nivel mundial, según los hallazgos del estudio sobre la carga mundial de enfermedad correspondiente al 2017. Casi el 80% de todos los casos de cáncer infantil se registran en países de ingresos bajos o medianos, donde el tratamiento a menudo resulta inasequible o no está disponible. Por este motivo, solo sobreviven entre el 15% y el 45% de estos pacientes pediátricos, frente a más del 80% en los países de ingresos altos. Esto constituye una gran inequidad en materia de salud.En cumplimiento del mandato establecido en la resolución WHA70.12 de la Asamblea Mundial de la Salud, la Organización Mundial de la Salud (OMS) junto con el hospital pediátrico de investigación St. Jude y otros asociados mundiales puso en marcha la Iniciativa Mundial contra el Cáncer Infantil ante la Asamblea General de las Naciones Unidas, en ocasión de la tercera reunión de alto nivel sobre la prevención y el control de las enfermedades no transmisibles, celebrada en septiembre del 2018. Esta iniciativa tiene como objetivo incrementar la tasa de supervivencia mundial de los pacientes pediátricos con cáncer hasta por lo menos el 60% para el 2030 y, simultáneamente, reducir el sufrimiento de toda la población infantil con cáncer. Transcurridos cinco años de la puesta en marcha de la iniciativa, más de 70 países de las seis regiones de la OMS han logrado avanzar a distintas fases de actuación mediante la aplicación del marco de acción de la iniciativa denominado CureAll. Ha habido muchos enfoques que han dado buenos resultados para la consecución de los pilares y los elementos facilitadores de CureAll y que han demostrado que es posible mejorar la atención de la población infantil con cáncer en los países de ingresos bajos y medianos, siempre que haya una férrea voluntad política, compromisos multisectoriales e inversiones estratégicas.
O câncer é um importante problema de saúde pública que afeta cerca de 20 milhões de pessoas a cada ano e é responsável por uma em cada seis mortes em todo o mundo. A carga do câncer está aumentando rapidamente, sobrecarregando os sistemas de saúde, que não conseguem prevenir e controlar a doença. O câncer infantil constitui um desafio significativo e relevante para a saúde pública: essa foi a nona principal causa de doenças infantis em todo o mundo, de acordo com os resultados do estudo Global Burden of Disease 2017. Quase 80% de todas as crianças diagnosticadas com câncer vivem em países de baixa e média renda, onde o tratamento geralmente não está disponível ou é inacessível. Como resultado, apenas cerca de 15% a 45% dessas crianças sobrevivem, em comparação com mais de 80% nos países de alta renda. Isso representa uma grande falta de equidade em saúde.Cumprindo o estabelecido pela Resolução 70.12 da Assembleia Mundial da Saúde, a Organização Mundial da Saúde (OMS), juntamente com o Saint Jude Children's Research Hospital e outros parceiros mundiais, lançou a Iniciativa Global para o Câncer Infantil na Assembleia Geral das Nações Unidas, durante a terceira Reunião de Alto Nível sobre prevenção e controle de doenças não transmissíveis, em setembro de 2018. A Iniciativa tem como objetivo aumentar a sobrevida global de crianças com câncer para pelo menos 60% até 2030 e, ao mesmo tempo, reduzir o sofrimento de todas as crianças com câncer. Cinco anos após o lançamento da Iniciativa, mais de 70 países das seis regiões da OMS avançaram para diferentes fases de ação por meio da implementação da estrutura CureAll da Iniciativa. O sucesso de muitas abordagens para implementação dos pilares e facilitadores da CureAll demonstraram que é possível melhorar o atendimento a crianças com câncer em países de baixa e média renda, desde que haja forte vontade política, compromissos multissetoriais e investimento estratégico.
RESUMEN
BACKGROUND: Cervical cancer is a significant public health problem, with 570,000 new cases and 300,000 deaths of women per year globally, mostly in low- and middle-income countries. In 2018 the WHO Director General made a call to action for the elimination of cervical cancer as a public health problem. MAIN BODY: New thinking on programmatic approaches to introduce emerging technologies and screening and treatment interventions of cervical precancer at scale is needed to achieve elimination goals. Implementation research (IR) is an important yet underused tool for facilitating scale-up of evidence-based screening and treatment interventions, as most research has focused on developing and evaluating new interventions. It is time for countries to define their specific IR needs to understand acceptability, feasibility, and cost-effectiveness of interventions as to design and ensure effective implementation, scale-up, and sustainability of evidence-based screening and treatment interventions. WHO convened an expert advisory group to identify priority IR questions for HPV-based screening and treatment interventions in population-based programmes. Several international organizations are supporting large scale introduction of screen-and-treat approaches in many countries, providing ideal platforms to evaluate different approaches and strategies in diverse national contexts. CONCLUSION: For reducing cervical cancer incidence and mortality, the readiness of health systems, the reach and effectiveness of new technologies and algorithms for increasing screening and treatment coverage, and the factors that support sustainability of these programmes need to be better understood. Answering these key IR questions could provide actionable guidance for countries seeking to implement the WHO Global Strategy towards cervical cancer elimination.
Asunto(s)
Infecciones por Papillomavirus , Neoplasias del Cuello Uterino , Femenino , Humanos , Incidencia , Renta , Tamizaje Masivo , Infecciones por Papillomavirus/prevención & control , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/epidemiología , Neoplasias del Cuello Uterino/prevención & control , VacunaciónRESUMEN
The World Health Organization (WHO) is leading a call to action to eliminate cervical cancer by the end of the century through global implementation of two effective evidence-based preventive interventions: HPV vaccination and cervical screening and management (CSM). Models estimate that without intervention, over the next 50 years 12.2 million new cases of cervical cancer will occur, nearly 60% of which are preventable only through CSM. Given that more than 80% of the cervical cancer occurs in low- and middle-income countries (LMICs), scaling up sustainable CSM programs in these countries is a top priority for achieving the global elimination goals. Multiple technologies have been developed and validated to meet this need. Now it is critical to identify strategies to implement these technologies into complex, adaptive health care delivery systems. As part of the coordinated cervical cancer elimination effort, we applied a systems thinking lens to reflect on our experiences with implementation of HPV-based CSM programs using the WHO health systems framework. While many common health system barriers were identified, the effectiveness of implementation strategies to address them was context dependent; often reflecting differences in stakeholder's belief in the quality of the evidence supporting a CSM algorithm, the appropriateness of the evidence and algorithm to context, and the 'implementability' of the algorithm under realistic assessments of resource availability and constraints. A structured planning process, with early and broad stakeholder engagement, will ensure that shared-decisions in CSM implementation are appropriately aligned with the culture, values, and resource realities of the setting.
Asunto(s)
Infecciones por Papillomavirus , Neoplasias del Cuello Uterino , Países en Desarrollo , Detección Precoz del Cáncer , Femenino , Humanos , Infecciones por Papillomavirus/diagnóstico , Infecciones por Papillomavirus/prevención & control , Análisis de Sistemas , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/prevención & controlRESUMEN
The knowledge and perceptions of cervical cancer among HIV negative and positive women, aged 25-49 years, from rural and urban locations in Zambia was systematically accessed in this study to determine any differences. Data were coded and analyzed using NVivo software. Compared to HIV negative women, HIV positive women had more accurate information about cervical cancer. They were more likely to cite male circumcision as the best approach to cervical cancer prevention. HPV infection was more commonly mentioned as a risk factor among HIV positive women. However, HIV positive women displayed little knowledge about HPV being the major cause of cervical cancer. Among HIV positive women, lack of time was the major screening barrier cited while HIV negative women mentioned being symptomatic as a determinant for early detection. Compared to rural residents, urban residents cited a wider range of cervical cancer information sources, including media and workplace although all of the participants who stated that they had no knowledge of cervical cancer were urban residents. Overall, knowledge and perceptions of cervical cancer among study participants was high, although differences exist between subgroups. Sharing accurate and standardized information on cervical cancer would improve participation in cervical cancer screening services.
Asunto(s)
Detección Precoz del Cáncer , Seronegatividad para VIH , Seropositividad para VIH/diagnóstico , Conocimientos, Actitudes y Práctica en Salud , Infecciones por Papillomavirus/prevención & control , Características de la Residencia , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/prevención & control , Adulto , Femenino , Seropositividad para VIH/etnología , Humanos , Entrevistas como Asunto , Tamizaje Masivo , Persona de Mediana Edad , Infecciones por Papillomavirus/diagnóstico , Infecciones por Papillomavirus/etnología , Investigación Cualitativa , Población Rural , Determinantes Sociales de la Salud , Encuestas y Cuestionarios , Población Urbana , Neoplasias del Cuello Uterino/etnología , Zambia/epidemiologíaRESUMEN
Cancer has become a global health concern with marked differences in the incidence and mortality rates between developing and developed countries. Understanding the factors that shape uptake of preventative and screening services is the key. We use in-depth interviews with 13 Zambian urban-based female cancer survivors to explore the facilitators and barriers to screening, diagnosis and treatment, with a particular focus on cultural influences. We identified a central theme (i.e. a story told about cancer) in all of the interviews: 'cancer is a death sentence'. Most women referenced this theme to describe their own, their family members', or community members' reactions to their diagnosis, along with references to cancer as 'contagious' and 'a shameful illness'. We also identified a theme entitled 'survivors as advocates', within which women described engaging in advocacy work to challenge stigma, misconceptions and misinformation about cancer; and advocating early detection and diagnosis, compliance with medical treatment and the sharing of success stories. This analysis points to the need for survivors to be front and center of preventative efforts. Their personal experiences, legitimacy and connections in the community, and their enthusiasm in helping others should be fostered, particularly in low-resource settings.
Asunto(s)
Adaptación Psicológica , Neoplasias de la Mama/psicología , Supervivientes de Cáncer/psicología , Neoplasias de los Genitales Femeninos/psicología , Tamizaje Masivo , Adulto , Actitud Frente a la Salud , Femenino , Humanos , Entrevistas como Asunto , Investigación Cualitativa , Autoeficacia , Vergüenza , Estigma Social , ZambiaRESUMEN
OBJECTIVES: We sought to determine the clinical performance of visual inspection with acetic acid (VIA), digital cervicography (DC), Xpert human papillomavirus (HPV), and OncoE6 for cervical cancer screening in an HIV-infected population. MATERIALS AND METHODS: HIV-infected women 18 years or older were included in this cross-sectional validation study conducted in Lusaka, Zambia. The screening tests were compared against a histological gold standard. We calculated sensitivity, specificity, positive and negative predictive values, positive and negative likelihood ratios, and odds ratios using cervical intraepithelial neoplasia grade 2 or worse (CIN 2+) and grade 3 or worse (CIN 3+) thresholds. RESULTS: Between January and June 2015, a total of 200 women were enrolled. Fifteen percent were screen positive by VIA, 20% by DC, 47% by Xpert HPV, and 6% by OncoE6. Using a CIN 2+ threshold, the sensitivity and specificity of VIA were 48% (95% CI = 30%-67%) and 92% (95% CI = 86%-95%), respectively. Similarly, the sensitivity and specificity of DC were 59% (95% CI = 41%-76%) and 88% (95% CI = 82%-93%), respectively. The sensitivity and specificity of Xpert HPV were 88% (95% CI = 71%-97%) and 60% (95% CI = 52%-68%), respectively. Finally, the sensitivity and specificity of OncoE6 were 31% (95% CI = 16%-50%) and 99% (95% CI = 97%-100%), respectively. CONCLUSIONS: VIA and DC displayed moderate sensitivity and high specificity. Xpert HPV performed equivalently to currently approved HPV DNA tests, with high sensitivity and moderate specificity. OncoE6 displayed excellent specificity but low sensitivity. These results confirm an important role for VIA, DC, and Xpert HPV in screen-and-treat cervical cancer prevention in low- and middle-income countries, such as Zambia.
Asunto(s)
Pruebas Diagnósticas de Rutina/métodos , Tamizaje Masivo/métodos , Sistemas de Atención de Punto , Neoplasias del Cuello Uterino/diagnóstico , Adulto , Estudios Transversales , Femenino , Infecciones por VIH/complicaciones , Humanos , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Sensibilidad y Especificidad , ZambiaRESUMEN
Cancers of the breast, uterine cervix, and lip or oral cavity are three of the most common malignancies in India. Together, they account for about 34% of more than 1 million individuals diagnosed with cancer in India each year. At each of these cancer sites, tumours are detectable at early stages when they are most likely to be cured with standard treatment protocols. Recognising the key role that effective early detection and screening programmes could have in reducing the cancer burden, the Indian Institute for Cytology and Preventive Oncology, in collaboration with the US National Cancer Institute Center for Global Health, held a workshop to summarise feasible options and relevant evidence for screening and early detection of common cancers in India. The evidence-based recommendations provided in this Review are intended to act as a guide for policy makers, clinicians, and public health practitioners who are developing and implementing strategies in cancer control for the three most common cancers in India.
Asunto(s)
Neoplasias de la Mama/epidemiología , Detección Precoz del Cáncer/normas , Neoplasias de la Boca/epidemiología , Guías de Práctica Clínica como Asunto , Neoplasias del Cuello Uterino/epidemiología , Neoplasias de la Mama/prevención & control , Países en Desarrollo , Medicina Basada en la Evidencia , Femenino , Humanos , India/epidemiología , Labio/patología , Masculino , Neoplasias de la Boca/prevención & control , Prevalencia , Medición de Riesgo , Neoplasias del Cuello Uterino/prevención & controlRESUMEN
BACKGROUND: HIV infection is associated with a higher incidence of precancerous cervical lesions and their progression to invasive cervical cancer (ICC). Zambia is a global epicenter of HIV and ICC, yet the overall burden of cervical pre-cancer [cervical intraepithelial neoplasia 3 (CIN3)] and ICC among its HIV positive adult female population is unknown. The objective of this study was to determine the burden of cervical disease among HIV positive women in Zambia by estimating the number with CIN3 and ICC. METHODS: We conducted a cross-sectional study among 309 HIV positive women attending screening in Lusaka (Zambia's most populated province) to measure the cervical disease burden by visual inspection with acetic acid enhanced by digital cervicography (DC), cytology, and histology. We then used estimates of the prevalence of CIN3 and ICC from the cross-sectional study and Spectrum model-based estimates for HIV infection among Zambian women to estimate the burden of CIN3 and ICC among HIV positive women nationally. RESULTS: Over half (52 %) of the study participants screened positive by DC, while 45 % had cytologic evidence of high grade squamous intraepithelial lesions (SIL) or worse. Histopathologic evaluation revealed that 20 % of women had evidence of CIN2 or worse, 11 % had CIN3 or worse, and 2 % had ICC. Using the Spectrum model, we therefore estimate that 34,051 HIV positive women in Zambia have CIN3 and 7,297 have ICC. CONCLUSIONS: The DC, cytology, and histology results revealed a large cervical disease burden in this previously unscreened HIV positive population. This very large burden indicates that continued scale-up of cervical cancer screening and treatment is urgently needed.
Asunto(s)
Infecciones por VIH/complicaciones , Displasia del Cuello del Útero/diagnóstico , Displasia del Cuello del Útero/epidemiología , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/epidemiología , Adulto , Estudios Transversales , Femenino , Infecciones por VIH/virología , Humanos , Incidencia , Tamizaje Masivo , Persona de Mediana Edad , Modelos Teóricos , Prevalencia , Neoplasias del Cuello Uterino/virología , Adulto Joven , Zambia/epidemiología , Displasia del Cuello del Útero/virologíaRESUMEN
OBJECTIVE: The objective of this study was to assess the conditions under which Zambian women with a history of cervical cancer screening by visual inspection with acetic acid might switch to human papillomavirus-based testing in the future. MATERIALS AND METHODS: We conducted a choice-based conjoint survey in a sample of women recently screened by visual inspection in Lusaka, Zambia. The screening attribute considered in hypothetical-choice scenarios included screening modality, sex and age of the examiner, whether screening results would be presented visually, distance from home to the clinic, and wait time for results. RESULTS: Of 238 women in the sample, 208 (87.4%) provided responses sufficiently reliable for analysis. Laboratory testing on a urine sample was the preferred screening modality, followed by visual screening, laboratory testing on a self-collected vaginal specimen, and laboratory testing on a nurse-collected cervical specimen. Market simulation suggested that only 39.7% (95% CI = 33.8-45.6) of the respondents would prefer urine testing offered by a female nurse in her 30s over visual inspection of the cervix conducted by a male nurse in his 20s if extra wait time were as short as 1 hour and the option of viewing how their cervix looks like were not available. CONCLUSIONS: Our study suggests that, for some women, the level of preference for human papillomavirus-based screening strategies may depend highly on the process and conditions of service delivery.
Asunto(s)
Detección Precoz del Cáncer/métodos , Técnicas de Diagnóstico Molecular/métodos , Papillomaviridae/aislamiento & purificación , Aceptación de la Atención de Salud , Neoplasias del Cuello Uterino/diagnóstico , Adolescente , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , ZambiaRESUMEN
OBJECTIVE: We sought to investigate the progression of human papillomaviruses (HPV) infection in HIV-positive women after cryotherapy. METHODS: We examined changes in detection of high-risk HPV (hrHPV) cervical infections among HIV-infected women over a 12-week period after cryotherapy using stored specimens from a cohort study conducted between June 2009 and March 2011 in Lusaka, Zambia. Samples from visits at baseline and weeks 4, 8, and 12 were tested using the Roche Linear Array assay. RESULTS: A total of 89 women were included in the analysis. The median age was 32 years (interquartile range [IQR], 28-36 years). The median CD4+ cell count was 350 cells/µL (IQR, 214-470 cells/µL), and 66% of women were receiving antiretroviral therapy. At baseline, the prevalence of hrHPV was 91% (95% confidence interval [CI], 83%-95%). HPV45 was the most common HPV type, present in (30%) women, followed by HPV16 (27%), HPV18 (27%), HPV51 (20%), and HPV58 (22%). Among women with valid results both at baseline and 12 weeks, 25% (17/67) cleared their initial hrHPV infection within 12 weeks of treatment, although 65% (11/17) had new hrHPV types detected. CONCLUSIONS: Cryotherapy led to clearance of 25% of hrHPV infections within 12 weeks of treatment. However, hrHPV infection remained persistent in most women, and new hrHPV types were detected often, explaining the high rate of persistence and recurrence of cervical disease in this population. Continued efforts to scale up HPV vaccination and cervical screening should remain a priority in high HIV burden settings such as Zambia.
Asunto(s)
Crioterapia/métodos , Infecciones por VIH/complicaciones , Papillomaviridae/aislamiento & purificación , Infecciones por Papillomavirus/terapia , Enfermedades del Cuello del Útero/terapia , Adolescente , Adulto , Estudios de Cohortes , Femenino , Papillomavirus Humano 16 , Humanos , Persona de Mediana Edad , Estudios Prospectivos , Resultado del Tratamiento , Adulto Joven , ZambiaRESUMEN
Introduction: Although the burden of cervical cancer in Africa is highest, HPV vaccination coverage remains alarmingly low in this region. Providers' knowledge and recommendation are key drivers of HPV vaccination uptake. Yet, evidence about providers' knowledge and recommendation practices about the HPV vaccine against a backdrop of emerging vaccine hesitancy fueled by the COVID-19 pandemic is lacking in Africa. Methods: A cross-sectional study was conducted in 2021-2022 among healthcare providers involved in cervical cancer prevention activities in Africa. They were invited to report prior training, the availability of the HPV vaccine in their practice, whether they recommended the HPV vaccine, and, if not, the reasons for not recommending it. Their knowledge about the HPV vaccine was assessed through self-reporting (perceived knowledge) and with three pre-tested knowledge questions (measured knowledge). Results: Of the 153 providers from 23 African countries who responded to the survey (mean age: 38.5 years, SD: 10.1), 75 (54.0%) were female and 97 (63.4%) were based In countries with national HPV immunization programs. Overall, 57 (43.8%) reported having received prior training on HPV vaccine education/counseling, and 40 (37.4%) indicated that the HPV vaccine was available at the facility where they work. Most respondents (109, 83.2%) reported recommending the HPV vaccine in their practice. Vaccine unavailability (57.1%), lack of effective communication tools and informational material (28.6%), and need for adequate training (28.6%) were the most commonly reported reasons for not recommending the HPV vaccine. While 63 providers (52.9%) reported that their knowledge about HPV vaccination was adequate for their practice, only 9.9% responded correctly to the 3 knowledge questions. Conclusion: To increase HPV vaccination coverage and counter misinformation about this vaccine in Africa, adequate training of providers and culturally appropriate educational materials are needed to improve their knowledge of the HPV vaccine and to facilitate effective communication with their patients and the community.
Asunto(s)
COVID-19 , Infecciones por Papillomavirus , Vacunas contra Papillomavirus , Neoplasias del Cuello Uterino , Humanos , Femenino , Adulto , Masculino , Estudios Transversales , Neoplasias del Cuello Uterino/prevención & control , Infecciones por Papillomavirus/prevención & control , Pandemias , Vacunación/psicología , Conocimientos, Actitudes y Práctica en Salud , COVID-19/prevención & control , Personal de Salud , África , Vacunas contra Papillomavirus/uso terapéuticoRESUMEN
OBJECTIVES: We examined age, residence, education and wealth inequalities and their combinations on cervical precancer screening probabilities for women. We hypothesised that inequalities in screening favoured women who were older, lived in urban areas, were more educated and wealthier. DESIGN: Cross-sectional study using Population-Based HIV Impact Assessment data. SETTING: Ethiopia, Malawi, Rwanda, Tanzania, Zambia and Zimbabwe. Differences in screening rates were analysed using multivariable logistic regressions, controlling for age, residence, education and wealth. Inequalities in screening probability were estimated using marginal effects models. PARTICIPANTS: Women aged 25-49 years, reporting screening. OUTCOME MEASURES: Self-reported screening rates, and their inequalities in percentage points, with differences of 20%+ defined as high inequality, 5%-20% as medium, 0%-5% as low. RESULTS: The sample size of participants ranged from 5882 in Ethiopia to 9186 in Tanzania. The screening rates were low in the surveyed countries, ranging from 3.5% (95% CI 3.1% to 4.0%) in Rwanda to 17.1% (95% CI 15.8% to 18.5%) and 17.4% (95% CI 16.1% to 18.8%) in Zambia and Zimbabwe. Inequalities in screening rates were low based on covariates. Combining the inequalities led to significant inequalities in screening probabilities between women living in rural areas aged 25-34 years, with a primary education level, from the lowest wealth quintile, and women living in urban areas aged 35-49 years, with the highest education level, from the highest wealth quintile, ranging from 4.4% in Rwanda to 44.6% in Zimbabwe. CONCLUSIONS: Cervical precancer screening rates were inequitable and low. No country surveyed achieved one-third of the WHO's target of screening 70% of eligible women by 2030. Combining inequalities led to high inequalities, preventing women who were younger, lived in rural areas, were uneducated, and from the lowest wealth quintile from screening. Governments should include and monitor equity in their cervical precancer screening programmes.
Asunto(s)
Infecciones por VIH , Humanos , Femenino , Zambia/epidemiología , Zimbabwe , Tanzanía/epidemiología , Malaui , Etiopía/epidemiología , Rwanda/epidemiología , Estudios Transversales , Escolaridad , Factores SocioeconómicosRESUMEN
Background: Africa is home to many countries with the highest incidence of cervical cancer in the world. It is encouraging to see that the efforts to prevent and manage this disease are intensifying across the continent. The World Health Organization (WHO) has, in the last years, led a world-wide initiative to eliminate cervical cancer as a public health problem, starting by setting clear targets for 2030. Aim: To assist those African countries with the largest burden of cervical cancer, to reach the set targets, as a first step, WHO initiated a baseline capacity assessment in African high burden countries. We present and discuss the results thereof in this paper. Method: The countries selected for the baseline evaluation were Eswatini, Guinea, Malawi, Rwanda, Uganda and Zambia. The data were collected by a mailed questionnaire in English, with 129 questions, most of them with preset answer options. It was answered by national coordinators of non-communicable diseases, cancer control or reproductive health programmes in the ministries of health and by the WHO country representatives. Based on the answers, suggestions were made towards optimising the efforts for cancer control. Results: Except for Eswatini and Guinea, vaccination against the human papilloma virus (HPV) has reached between 74% and 98% of girls in the age bracket. The main method for cervical screening is still inspection with acid acetic. HPV testing, recommended by WHO, is being introduced slowly. The numbers of women screened are not yet nearing the required levels. Between 30% and 70% of the cervical cancers diagnosed are being treated with palliative intent. A deficit of personnel was reported for all professions involved in cervical cancer care. Conclusions: Guinea will need assistance to implement HPV immunisations and expand screening. In all six countries surveyed, steps should be taken to introduce or scale up the more precise HPV screening instead of acid acetic inspection of the cervix, to replace the current cryoablation of the preinvasive lesions of the cervix with thermal ablation and to increase the capacity for screening. Solutions need to be found for covering the dearth in gynaecological oncologists and radiotherapy installations and personnel.
RESUMEN
Aim: We present and analyse the findings of a survey of the readiness of the healthcare systems in Eswatini, Guinea, Malawi, Rwanda, Uganda and Zambia, to implement the necessary measures for attaining the targets for cervical cancer control, set by The World Health Organization (WHO), by the year 2030. Methods: A questionnaire with 129 questions with preset answer options was completed in 2020, by ministries of health programme coordinators for non-communicable diseases, cancer control and/or reproductive health, and by WHO country offices, in the six countries selected. Results: The findings on demographics, burden of disease, governance and management, laboratory services, equipment, supplies and medicines, as well as on personnel and training are presented here. The burden of cervical cancer in the countries studied is considerable, according to The International Agency for Research on Cancer estimations. The incidence of the disease is augmented by the high prevalence of HIV infection, in most of the countries surveyed. Most of the population live in rural areas, where access to the health services is far from ideal. Facilities for screening with human papilloma virus tests and for histopathology are limited. One pathologist covers the diagnostic needs of between 0.5 and 4 million inhabitants. Most other categories of health professionals are under-represented, and the capacity to train them is inadequate. Conclusions: Strong country commitment and leadership, innovative solutions and extensive international cooperation would be needed to attain the targets of cervical cancer control set by WHO, in these countries.
RESUMEN
OBJECTIVE: Thermal ablation (TA) was implemented in public sector cervical cancer prevention services in Zambia in 2012. Initially introduced as a treatment modality in primary healthcare clinics, it was later included in mobile outreach campaigns and clinical research trials. We report the feasibility, acceptability, safety, and provider uptake of TA in diverse clinical contexts. METHODS: Screening services based on visual inspection with acetic acid were offered by trained nurses to non-pregnant women aged 25-59 years. Women with a type 1 transformation zone (TZ) were treated with same-visit TA. Those with a type 2 or 3 TZ, or suspicious for cancer, were managed with same-visit electrosurgical excision or punch biopsy, respectively. A provider survey was conducted. RESULTS: Between 2012 and 2020, 2123 women were treated with TA: primary healthcare clinics, n = 746; mobile outreach clinics, n = 1127; research clinics, n = 250. Of the 996 women treated in primary healthcare and research clinics, 359 (48%) were HIV positive. Mild cramping during treatment was the most common adverse effect. No treatment interruptions occurred. No major complications were reported in the early (6 weeks) follow-up period. Providers expressed an overwhelming preference for TA over cryotherapy. CONCLUSION: TA was feasible, safe, and acceptable in diverse clinical contexts. It was the preferred ablation method of providers when compared with cryotherapy.
Asunto(s)
Neoplasias del Cuello Uterino , Ácido Acético , Adulto , Crioterapia/métodos , Detección Precoz del Cáncer/métodos , Femenino , Humanos , Persona de Mediana Edad , Neoplasias del Cuello Uterino/diagnóstico , Neoplasias del Cuello Uterino/patología , Neoplasias del Cuello Uterino/cirugía , ZambiaRESUMEN
Cancer research currently is heavily skewed toward high-income countries (HICs), with little research conducted in, and relevant to, the problems of low- and middle-income countries (LMICs). This regional discordance in cancer knowledge generation and application needs to be rebalanced. Several gaps in the research enterprise of LMICs need to be addressed to promote regionally relevant research, and radical rethinking is needed to address the burning issues in cancer care in these regions. We identified five top priorities in cancer research in LMICs based on current and projected needs: reducing the burden of patients with advanced disease; improving access and affordability, and outcomes of cancer treatment; value-based care and health economics; quality improvement and implementation research; and leveraging technology to improve cancer control. LMICs have an excellent opportunity to address important questions in cancer research that could impact cancer control globally. Success will require collaboration and commitment from governments, policy makers, funding agencies, health care organizations and leaders, researchers and the public.
Asunto(s)
Países en Desarrollo , Neoplasias , Atención a la Salud , Humanos , Renta , Neoplasias/epidemiología , Neoplasias/terapia , Pobreza , InvestigaciónRESUMEN
Groesbeck Parham and colleagues describe their Cervical Cancer Prevention Program in Zambia, which has provided services to over 58,000 women over the past five years, and share lessons learned from the program's implementation and integration with existing HIV/AIDS programs.
Asunto(s)
Países en Desarrollo , Recursos en Salud , Neoplasias del Cuello Uterino/prevención & control , Síndrome de Inmunodeficiencia Adquirida/economía , Síndrome de Inmunodeficiencia Adquirida/terapia , Femenino , Implementación de Plan de Salud , Accesibilidad a los Servicios de Salud , Humanos , Informática Médica , Evaluación de Programas y Proyectos de Salud , ZambiaRESUMEN
BACKGROUND: Globally, cervical cancer is the fourth leading cause of cancer-related death among women. Poor uptake of screening services contributes to the high mortality. We aimed to examine screening frequency, predictors of screening results, and patterns of sensitisation strategies by age group in a large, programmatic cohort. METHODS: We did a cohort study including 11 government health facilities in Lusaka, Zambia, in which we reviewed routine programmatic data collected through the Cervical Cancer Prevention Program in Zambia (CCPPZ). Participants who underwent cervical cancer screening in one of the participating study sites were considered for study inclusion if they had a screening result. Follow-up was accomplished per national guidelines. We did descriptive analyses and mixed-effects logistic regression for cervical cancer screening results allowing random effects at the individual and clinic level. FINDINGS: Between Jan 1, 2010, and July 31, 2019, we included 183â165 women with 204â225 results for visual inspection with acetic acid and digital cervicography (VIAC) in the analysis. Of all those screened, 21â326 (10·4%) were VIAC-positive, of whom 16â244 (76·2%) received treatment. Of 204â225 screenings, 92â838 (45·5%) were in women who were HIV-negative, 76â607 (37·5%) were in women who were HIV-positive, and 34â780 (17·0%) had an unknown HIV status. Screening frequency increased 65·7% between 2010 and 2019 with most appointments being first-time screenings (n=158â940 [77·8%]). Women with HIV were more likely to test VIAC-positive than women who were HIV-negative (adjusted odds ratio 3·60, 95% CI 2·14-6·08). Younger women (≤29 years) with HIV had the highest predictive probability (18·6%, 95% CI 14·2-22·9) of screening positive. INTERPRETATION: CCPPZ has effectively increased women's engagement in screening since its inception in 2006. Customised sensitisation strategies relevant to different age groups could increase uptake and adherence to screening. The high proportion of screen positivity in women younger than 20 years with HIV requires further consideration. Our data are not able to discern if women with HIV have earlier disease onset or whether this difference reflects misclassification of disease in an age group with a higher sexually transmitted infection prevalence. These data inform scale-up efforts required to achieve WHO elimination targets. FUNDING: US President's Emergency Plan for AIDS Relief.
Asunto(s)
Detección Precoz del Cáncer/estadística & datos numéricos , Neoplasias del Cuello Uterino/diagnóstico , Adulto , Estudios de Cohortes , Femenino , Humanos , Persona de Mediana Edad , Neoplasias del Cuello Uterino/epidemiología , Adulto Joven , Zambia/epidemiologíaRESUMEN
BACKGROUND: Zambia has one of the highest incidence and mortality rates of cervical cancer at 65.5 and 43.4 per 100 000 respectively. In line with efforts of the cervical cancer elimination strategy the Zambia national cervical cancer sub-committee undertook a resource mapping exercise of projected spending on the prevention and control program. The aim was to elicit the available resources over a prospective 4-year period and compare it to the projected costs. MATERIALS AND METHODS: A 4-step approach was used for this activity. This included creation of tool adapted for the local program, orientation of stakeholders to the tool, population of the tool by stakeholders and collation, comparison and reporting of submitted data. Comparative analysis to the cervical cancer control costing report 2019-2023 was conducted. RESULTS: Fifty-nine percent of resources in the stipulated period were allocated to prevention efforts. Isolated with diagnostic, treatment and palliation (14 %) the prevention allocation increased to 81 %. Community and stakeholder engagement was 5 % whilst technical assistance and health information were 12 % and 9 % respectively. The dispensation to research was the lowest at 0.7 %. For health system levels, secondary and primary levels were projected at 40 % and 12 % respectively following the central allotment of 45 %. Community and stakeholder engagement took up 3 %. The secondary prevention to tertiary intervention ratio was 4:1 in the projection compared to approximately 2:1 in the actual budgeted costs for the same period, showing a two-fold discordance. CONCLUSION: To achieve the accelerated elimination of cervical cancer as a public health problem policy cohesiveness is necessary. This can be facilitated with continuous stakeholder involvement in planning, implementation and review. POLICY SUMMARY: In order to accelerate the elimination of cervical cancer as a public health problem policy cohesiveness is vital and this can be achieved by continuous stakeholder involvement in planning, implementation and review.